Gramophone.



No. 831,344. I PATENTED SEPT. 18, 1906.

U. HILGENBBRG.

GRAMOPHONE.

I APPLIUATIGH FILED 12130.1, 1906.

2 SHEETS-SHEET 1.

PATENTED SEPT. 18, 1906;

0. HILGENgBRG. GRAMOPHONE.

2 SHEETSSHEBT 2.

i the reproducers.

CONRAD orrion.

'iGENBERG, OF CHICAGO, ILLINOIS.

GHAlifi-UFHQNE.

no. senses.

cogo, county oi Cook, oi Iillinois,

have invented it new and useful improvement in Gramoplwnes, oi oich toilowing a specification.

My improvement relates to that t of the greinophoncs described Y reproducer and the connections that part and the horns The object of my invention. is to inrrees the volume of sound and inipi'ovc the tr the instrument. The manner in whi flCC-OIZl:liSll this objectis described :lollowing specification, and illr ct-ed accompanying drawings, in which Figure 1 is a side view of the g showing the reproducers, conne horns in position supported by the crochet and in contact with the record a full-size side view of the icers, howing the relative positions of the netv ole-points on the record and port of the subrocket fork and clamp. Fig. View of the reproducers and cor e3. hex inclosing thein, showing the TfiltlJlVe position of the needle-points and connections for the horns. Fig. an inside face view of one of Fig. 5 is a, detail view of the supporting bracketfork and clamps.

In the drawings, A represents the grainephone-box containing the revolving moch enisrn which supports and rotates the I record B. .A(ljustnl ly attached to this box is sdou'ole bracket U. H At the free end of this bre-cket is e iork D. i To each cnd oi this fork aclrcu'lar hinged clamp E is attached.

"supporte dinthese clamps is a double-cone 'sound-hex"comprising telescopic sections 1 and'F, having tubular extensions G, which ere-adapted to form connecting supports for" the horns, as shown iii-Figs. 1 and. 3. Pro- 'ecting from the periphery of the section 1* 1s another tubular extension 11, which is also adopted to support a. horn, as shown in Figs. 1, 2, and 3. Supported Within. this conical box are two reproducers, (indicated awholc by I and 3,) and which fit closely in the inner ends of the said sections and the arms of which project outwardly through openings in the peripheries of said sections and held from lateral movement by the frictionel contact of the reproducers' with the Specification of Letters Patent.

Application filed December 1, 1905. Serial He. 289,8Q2.

Patented Sept, 18, 1906.

inside of the box-sections. The inside faces of the reproducers are so adjusted in relation to each other as to permit of the free vibration of the diepln'agms I I of said reproduceirs. The heck of each diaphragm is uncovered except by the conical box-section is therefore free to transmit the full force of the vibrations into each part of the of the needle-points K and L are in tandem, as shown 11). Figs. 2 and 3, and are so close hex. 'ihe reproducers are also so adjusted in the i)(13 lS6GtlOllS F end i that the ends together that vibrations. produced by the record and the two producers blend to gether. The adjustment of the needlepoints K and L is the same as in the ordinary reproducer except that the set-screws M are on the opposite side of the holder N, as shown in 2 and 3. To'support the reproducers, conical box-sections, extensions, and horns in addition to the ordinary double hrechet C, I provide a fork D, which may he attechcdto or mode an integral pert of the bracket C. The inside width of this fork is equal to the full length of the box On. the of this fork clamps E are ailixed, as shown in F 3?, 3, and These clamps may he of any form of construction that is adapted to encircle the extensions G of the box is and permit of the tree removal and exact .edj stinent of the box F and repr0-' ducers it contains and to when adjusted.

it is obvious that in separate parts to permit of the adjustment therein of the reproducers and that this separation may be errsnged in seyerel ways; also, that these parts when put together With the reproducers in place maybe either attached. together or be pcrlnanently-afihxed to each other. I have not described or illustrated any one or" these forms of construction, end as the possible variations do notflaffect the object of niy invention or change the result I reserve the right to use any of the methods of constructing and joining the several parts of this conical box F." The same is true of the clamps E, and I reserve the right to vary the construction of these ports. I also reserve the right to close the connection H with a cap and to use two or three horns O, as I may desire.

What I claim as new, and desire to secure by Letters fetent, is-

hold them securely the box F must be made the combination comprising a box A, rotating mechanism and record B; a bracket (.3 attached to said box; a fork U attached to the free end of said bracket; a pair of clamps E attached to the ends of said fork; a double coni al box having two tubular extensions G, and a tubular connection Il projecting from the periphery of said box, said extensions and connection being adapted to be connected with the horns said box being Supported in the clamps E, l'ork. D and bracket C; a pair of l'eproducers l. and J adjustably supported and partly .inclosed in said conical box,needle-points K and l, on. said reprodueers' arranged in tandem and close together; and a plurality of hdrns having suitable connections adapted to lit the tubular extensions G and connection ll, substantially i s'described and for the purposes specified.

2. In a gramopl'ione ol the kind described the combination consisting" ol a box A; rotating mechanism and record. B; a supporting-bracket C; a fork 1.) attached to said bracket, a double conical box supported in said fork and said box havin a plurality of extensions adapted to support horns O, and being adapted to inclose and. support a pair of reproducers; a pair of reprodueers partly inclosed and simport'ed by said conical box, needle-points on said rep'rodncers bei ng so arranged in said box that the needlepoints are in tandem and close together substantially as described and for the purposes specitied.

5%. ,ln :1. grninophone ol' the kind described, the combimition with the box A, rotating mechanism and record of a supportingbrncket having a- Fork 1) adapted to support the reprodinjcrs, box F and horns; a pair ol" reprodneers; needle-points on said reproduccrs so arranged and supported that. they are held in tandem and close together on said record; a double conical box, inclosing said reproducers, said box having a plurality of extensions adapted to support several horns and a plurality of horns connected with sand box. extensions, substantially as described and lot the purposes specified.

' el In a graphophone of the kind described the combination with the box A, rotating mechanism, record ii and supporting-l)racket of a double-ended conical box havi' a pluralitx of tubular connections adapted to support, several. horns; and a pair ol reprodncers Enclosed in said box; needle-points on said rcprodncers so adjusted that they are held. in tandem and close together at the points where they are in contact with the record, snbstant iall' as described and for the purposes spcci'liod,

(ONRAD llllitilflNllEltG. \Vi t n esses Josnrii S'raan, 'lnoniis J. MORGAN. 

